package com.liangdev.common.util;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * 一个thread工厂，用它创建的thread会带上pool信息
 * 
 * @author 陈坚 2012-5-9 下午1:24:40
 */
public class PoolThreadFactory implements ThreadFactory {

    final ThreadGroup   group;
    final AtomicInteger threadNumber = new AtomicInteger(1);
    final String        namePrefix;

    public PoolThreadFactory(String poolName){
        SecurityManager s = System.getSecurityManager();
        group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
        namePrefix = poolName + "-t-";
    }

    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);
        if (t.isDaemon()) t.setDaemon(false);
        if (t.getPriority() != Thread.NORM_PRIORITY) t.setPriority(Thread.NORM_PRIORITY);
        return t;
    }
}
